Structures, luminescence and photocatalytic properties of two nanostructured cadmium(II) coordination polymers synthesized by sonochemical process

Abstract By varying the dicarboxylate coligands, two nano-sized cadmium(II) coordination polymers (CPs), [Cd(bix)(DCTP)] n ( 1 ) and [Cd(bix) 2 (BPDC)] n ( 2 ) (bix = 1,4-bis(imidazol-1-ylmethyl)benzene, H 2 DCTP = 2,5-dichloroterephthalic acid, H 2 BPDC = biphenyl-4,4′-dicarboxylic acid) were synthesized hydrothermally and sonochemical irradiation. CPs 1 – 2 and their nanostructures have been characterized by elemental analysis, single-crystal X-ray diffraction, and scanning electron microscopy (SEM). CP 1 features a uninodal 4-connected 2D sql network consisting of two different helical arrays. Whilst, CP 2 displays 2D layer which constructed by the linear chains and M2L2 type discrete loops. The effect of ultrasonic power and temperature on the morphology and size of CPs 1 – 2 are investigated in detail. Nano-sized 1 – 2 show the relatively high photocatalytic performance for degradation of Methylene Blue (MB) under UV irradiation.